长期下尿路梗阻的继发声像图改变，应除外（）
A.膀胱小梁化
B.膀胱憩室
C.膀胱结石
D.双肾积水
E.前列腺增生
参考答案：E
填入适当的单词补全句子。
1. My mother goes to work _____________ bus.
2. John usually _____________ football with his friends.
3. We _____________ mountains last Sunday morning.
4. _____________ he go fishing with you yesterday?
5. Last Monday, I _____________ to the library.
与间接固位体设计有关的线是（）
A．观测线
B．支点线
C．力线
D．角分线
E．牙冠外形高点线
力线